138888848 has 40 divisors (see below), whose sum is σ = 308111232. Its totient is φ = 59413248.

The previous prime is 138888847. The next prime is 138888857. The reversal of 138888848 is 848888831.

It is a super-2 number, since 2×138888848² = 38580224197534208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 138888793 and 138888802.

It is not an unprimeable number, because it can be changed into a prime (138888847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95261 + ... + 96707.

Almost surely, 2^138888848 is an apocalyptic number.

It is an amenable number.

138888848 is an abundant number, since it is smaller than the sum of its proper divisors (169222384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138888848 is a wasteful number, since it uses less digits than its factorization.

138888848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319 (or 2313 counting only the distinct ones).

The product of its digits is 3145728, while the sum is 56.

The square root of 138888848 is about 11785.1112850070. Note that the first 3 decimals coincide. The cubic root of 138888848 is about 517.8720335051.

The spelling of 138888848 in words is "one hundred thirty-eight million, eight hundred eighty-eight thousand, eight hundred forty-eight".